| LUXEMBOURG | 1937 (3 Sept). Redange - s - Attert - Brazil / Sahara. Reg air fkd env (3 fr 50c) + French stamps (8,50 fr) for air mail on reverse. Rare early mixed combination comercial usage. |
U$ | 475 |
| LUXEMBOURG | 1937 (3 Sept). Redange - s - Attert - Brazil / Sahara. Reg air fkd env (3 fr 50c) + French stamps (8,50 fr) for air mail on reverse. Rare early mixed combination comercial usage. |
U$ | 475 |